Poly[μ3-aqua-aqua-μ5-(4-nitro-benzoato)-caesium]

Area of Science:

• Inorganic Chemistry
• Crystal Engineering
• Materials Science

Background:

• Caesium salts of organic acids are of interest for their diverse structural motifs.
• 4-Nitro-benzoic acid is a versatile ligand for constructing coordination polymers.

Purpose of the Study:

• To elucidate the crystal structure and supramolecular assembly of the caesium 4-nitro-benzoate complex.
• To investigate the coordination environment of caesium ions and the role of hydrogen bonding.

Main Methods:

• Single-crystal X-ray diffraction analysis was employed to determine the complex's structure.
• Coordination geometry and hydrogen bonding networks were analyzed.

Main Results:

• The caesium ion exhibits an irregular CsO9 coordination sphere.
• The structure features bridging nitro groups, a bidentate carboxylate, and both bridging and monodentate water molecules.
• A three-dimensional framework polymer is formed through these coordination interactions.
• Water-carboxylate and water-water hydrogen bonds stabilize the structure.

Conclusions:

• The synthesized caesium 4-nitro-benzoate forms a robust 3D coordination polymer.
• The coordination chemistry of caesium and hydrogen bonding play crucial roles in the framework assembly.